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计算:(−
1
2
xy2)2(3xy−4xy2+1)
人气:227 ℃ 时间:2020-04-04 02:24:36
解答
(-
1
2
xy22(3xy-4xy2+1)
=
1
4
x2y4(3xy-4xy2+1)
=
3
4
x3y5-x3y6+
1
4
x2y4
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